{"id":205430,"date":"2023-07-04T15:23:02","date_gmt":"2023-07-04T19:23:02","guid":{"rendered":"https:\/\/www.constructionspecifier.com\/?p=205430"},"modified":"2023-07-05T12:18:35","modified_gmt":"2023-07-05T16:18:35","slug":"heavy-lifting-solutions-firm-helps-install-portland-airport-mammoth-ceiling-panels","status":"publish","type":"post","link":"https:\/\/www.constructionspecifier.com\/heavy-lifting-solutions-firm-helps-install-portland-airport-mammoth-ceiling-panels\/","title":{"rendered":"Heavy lifting solutions firm helps install mammoth ceiling panels at PDX"},"content":{"rendered":"<figure id=\"attachment_205431\" aria-describedby=\"caption-attachment-205431\" style=\"width: 347px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/07\/mammoet-ceiling-panel-lift-daytime.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-205431\" src=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/07\/mammoet-ceiling-panel-lift-daytime-300x235.jpg\" alt=\"A daytime view of the panels being carried to be installed into the roof structure at the central area of Portland International Airport (PDX).\" width=\"347\" height=\"272\" srcset=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/07\/mammoet-ceiling-panel-lift-daytime-300x235.jpg 300w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/07\/mammoet-ceiling-panel-lift-daytime-500x392.jpg 500w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/07\/mammoet-ceiling-panel-lift-daytime-768x602.jpg 768w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/07\/mammoet-ceiling-panel-lift-daytime.jpg 1024w\" sizes=\"auto, (max-width: 347px) 100vw, 347px\" \/><\/a><figcaption id=\"caption-attachment-205431\" class=\"wp-caption-text\"><span style=\"font-size: 9pt; font-family: arial, helvetica, sans-serif;\">A daytime view of the panels being carried to be installed into the roof structure at the central area of Portland International Airport (PDX). <\/span><span style=\"font-size: 9pt; font-family: arial, helvetica, sans-serif;\"><em>Photos courtesy Mammoet. <\/em><\/span><\/figcaption><\/figure>\n<p>A heavy lifting solutions firm recently helped install five distinct types of 20 roof panels at Portland International Airport (PDX), Oregon, as part of a terminal expansion project aiming to double the airport size.<\/p>\n<p>A key component of the expansion is the construction of a new, seismically isolated roof structure over the central area of the airport. Mammoet was contracted to jack up, transport, and install the 20 roof panels while avoiding passenger disruption.<\/p>\n<p>The roof, crafted mainly from regionally and sustainably sourced wood, was fully prefabricated between the active runways of the airport over the course of a year. Prior to being moved, the roof panels were disconnected into approximately football-field-sized pieces to be transported to the new terminal expansion. This allowed the airport to carry on as usual while minimizing disruption to airport operations. Depending on the type of panel, each was launched, rolled into place, set directly with self-propelled modular transporters (SPMTs), or lifted with a crane into its final position.<\/p>\n<p>Most panels needed to be installed over the top of populated areas of the existing terminal building. With safety at the forefront of the entire project, work was done during strict overnight closures when the public could be kept clear of the work area. Once the area was verified to be clear of all pedestrians, the installation of the roof panels could begin. Each panel, referred to as a super cassette, was installed using stationary skidding propelled by strand jacks and lowered with the skidding jacks onto column isolators. The next set of panels were then rolled into position down the bottom flanges of the previously set panels. The panels were safely secured with consideration for potential elevated wind and project specific seismic requirements before the public was allowed to reoccupy the area below.<\/p>\n<p>The panels vary in weight between 40 tons (36.3 tonnes) and 632 tons (573 tonnes), with dimensions up to 72 x 50 x 6 m (236 x 164 x 19.7 ft). Mammoet used four towers of their jacking systems to jack up the roof panels to approximately 17 m (56 ft) to allow SPMTs with falsework to be driven underneath each roof section. At midnight on the day of each move, the runways were closed for the 1.6 km\/h (1 mi\/h) transport of the panel from the laydown yard to the terminal.<\/p>\n<p>A major challenge was the wood material used in the roof panels\u2019 construction. Deflection of the roof panels was a major concern of the client and the roof designers, so at each point in the jacking, transport, and installation process, roof deflection was monitored and kept within stringent criteria. Only the super cassette pieces had steel girders in the longitudinal direction to support the 25-m (82-ft) wooden arches and to allow the panels to be \u201claunched\u201d using stationary skidding equipment. Further, the supports for the launching jacks were temporary towers supported by wooden piles which were installed in the 1950s.<\/p>\n<figure id=\"attachment_205432\" aria-describedby=\"caption-attachment-205432\" style=\"width: 371px\" class=\"wp-caption alignleft\"><a href=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/07\/mammoet-ceiling-panel-lift-nightview.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-205432\" src=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/07\/mammoet-ceiling-panel-lift-nightview-300x225.jpg\" alt=\"A nighttime view of a ceiling panel in transit.\" width=\"371\" height=\"278\" srcset=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/07\/mammoet-ceiling-panel-lift-nightview-300x225.jpg 300w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/07\/mammoet-ceiling-panel-lift-nightview-500x375.jpg 500w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/07\/mammoet-ceiling-panel-lift-nightview-768x576.jpg 768w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/07\/mammoet-ceiling-panel-lift-nightview.jpg 1024w\" sizes=\"auto, (max-width: 371px) 100vw, 371px\" \/><\/a><figcaption id=\"caption-attachment-205432\" class=\"wp-caption-text\"><span style=\"font-size: 9pt; font-family: arial, helvetica, sans-serif;\">A nighttime view of a ceiling panel in transit. <\/span><\/figcaption><\/figure>\n<p>To mitigate any issues, Mammoet performed extensive friction testing in its Rosharon, Texas, yard prior to execution to ensure no structural damage occurred to a mockup roof panel and that the design values presented to the client for strand jack anchoring were realistic. On site, Mammoet closely monitored the loads and deflections to ensure they were in line with the tested values.<\/p>\n<p>To date, Mammoet has successfully placed 16 panels to wrap up phase one of the project. Four additional panels will be installed in 2024 during phase two\u2014once the interior of the new terminal expansion has been built out by the client for general occupancy. Mammoet\u2019s airport-related expertise includes examples such as Seattle-Tacoma International Airport\u2019s (SEA\u2019s) elevated pedestrian walkway, the world\u2019s longest airside bridge in Hong Kong, and the transport of airport buildings in Texas.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A heavy lifting solutions firm recently helped install five distinct types of 20 roof panels at Portland International Airport (PDX), Oregon, as part of a terminal expansion project aiming to double the airport size.<\/p>\n","protected":false},"author":29853,"featured_media":205433,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1029],"tags":[8663,6722,3312,8664,8665],"class_list":["post-205430","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-mammoet","tag-news","tag-oregon","tag-portland-international-airport-pdx","tag-roof-panels","entry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Heavy lifting solutions firm helps install mammoth ceiling panels at PDX - The Construction Specifier<\/title>\n<meta name=\"description\" content=\"A heavy lifting solutions firm recently helped install five distinct types of 20 roof panels at Portland International Airport (PDX), Oregon.\" \/>\n<meta name=\"robots\" content=\"index, follow, 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